public class javase01 {

    public static void main(String[] args) {
        int a = 10;
        int b = 20;
        System.out.println(!true);
        System.out.println(!false);
    }
    public static void main22(String[] args) {
        int a =  10;
        int b = 20;
        System.out.println(a>b);
        System.out.println(a == b);
        System.out.println(a<b);


    }
    public static void main21(String[] args) {
        int a = 10;
        a = a++;
        System.out.println(a);

    }
    public static void main20(String[] args) {
        int a = 10;
        int b = a++;
        System.out.println(a);
        System.out.println(b);
    }
    public static void main17(String[] args) {
        System.out.println();

    }
    public static void main16(String[] args) {

        String str = "123";
        int a = Integer.valueOf(str);
        int b = a+1;
        System.out.println(b);
        int ret = Integer.parseInt(str);
        System.out.println(ret);

    }
    public static void main15(String[] args) {
        int a = 10;
        String str1 = a + " ";
        System.out.println(str1);
        String str3 = String.valueOf(a);
        System.out.println(str3);

    }

    public static void main14(String[] args) {
        byte a = 10;
        byte b = 20;
        byte c  = (byte)(a+b);
        System.out.println(c);

    }
    public static void main13(String[] args) {

        int a = 10;
        boolean flg = true;

    }
    public static void main12(String[] args) {
        int a = 10;
        long b = 19;
        double d = 112.5;
        float f  = 2.4f;
        f = a;
        d = a;

    }
    public static void main11(String[] args) {
        final int SIZE;
        SIZE = 99;
        System.out.println(SIZE);
    }

    public static void main10(String[] args) {
        int gaobo = 9;
        int a3 = 99;
        {
            a3 = 10;
        }
        System.out.println(a3);
    }

    public static void main9(String[] args) {
        String str1 = "hello";
        String str2 = "abc";
        String str3 = str1 + str2;
        System.out.println(str3);
    }
    public static void main8(String[] args) {
        String str = "gaobo is coll!";
        System.out.println(str);
        int a = 10;
        System.out.println("a = " + a);
        int b = 20;
        System.out.println("hello " + a + b);
        System.out.println(a + b + "haha");
        String str2 = "hello\"张三\"";
        System.out.println(str2);
    }
    public static void main7(String[] args) {
        boolean flg1 = true;
        boolean flg2 = false;
    }
    public static void main6(String[] args) {
        short a = 10;
        short b = 20;
        System.out.println(Short.MAX_VALUE);
        System.out.println(Short.MIN_VALUE);
    }
    public static void main5(String[] args) {
        byte a = 127;
        System.out.println(a);
        byte b = 20;
        System.out.println(Byte.MAX_VALUE);
        System.out.println(Byte.MIN_VALUE);
    }
    public static void main4(String[] args) {
        char ch = 'a';
        char ch2 =  97;
        char ch3 = '高';
        System.out.println(ch);
        System.out.println(ch2);
        System.out.println(Character.MAX_VALUE);
        System.out.println(Character.MIN_RADIX);
    }
    public static void main3(String[] args) {
        float f = 12.5f;
        System.out.println(f);

    }
    public static void main2(String[] args) {
        double d = 10.25;
        System.out.println(d);
        System.out.println(Double.MAX_VALUE);
        System.out.println(Double.MIN_VALUE);
        double num = 1.1;
        System.out.println(num * num);
    }
    public static void main1(String[] args) {
        long a = 10L;
        System.out.println(a);
        System.out.println(Long.MAX_VALUE);
        System.out.println(Long.MIN_VALUE);
    }
}
